Broom-clamping machine.



H. E. SMITH 6: G. W. DUVALL.

BROOM CLAMPING MACHINEr APPLICATION FILED NOV-15.1916.

. 1,*25?,1 3. Patented. Feb. 19,1918.

2 SHEETS-SHEET l- H. E. SMITH & G. W. DUVALL.

BROOM CLAMPING MACHINE.

APPLICATION FILED NOV. 15. 1916- Patented Feb. 19, 1918.

2 SHEETS-SHEET 2.

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HARRY E. SMITH AND GEORGE W. 'DUVALL, OF'DAVENPORT, IOWA, ASSIGNORS TO MCDERN BROOM MACHINERY COMPANY, OF DAVENPORT, IOWA, A CORPORATION OF IOWA.

BROOM-OLA'MPING MACHINE.

Specification of Letters Patent.

Application filed November 15, 1916. Serial No. 131,451.

To all whom it may concern: I

\ Be it known that we, HARRY E. SMITH and GEORGE. W. DUVALL, citizens of the United States,'residing' at Davenport, in the county of Scott and State of Iowa, have invented certain new and useful Improvements in Broom-Clamping Machines, of which the, following is a specification,

v Our invention relates to an improvement in broom-clamping machines, and more particularly to that class of machines used to fasten the clampsor jaws of metal clamp brooms. V V

This invention is an improvement on a co-pending application of Norman H. Beebe, on broom clamping machines, Serial No. 10,7 58, and pertains particularly to a releasing mechanism for the upper clamp, which will be more fully disclosed and described in the following description.

In the accompanying drawings Figure 1 is a front elevation of the clamping portion of the machine, showing the variousparts in the position they occupy when ready to begin the clamping operation; I

Fig. 2 is a side elevation of Fig. 1;

Fig. 3 is a similar .view showing the upper cross-head; lowered and in the actof compressing the fiber, at which time the upper clamp releasing mechanism has released the clamp; and

Fig. 4: is a detail perspective view of the clamp-release mechanism.

Fig. 5 is a detail perspective view of the bellcrank and finger.

The numeral 1 indicates the main frame. Numbers 2 and 3 indicate the upper and lower movable cross-heads slidably held by suitable guides to the main frame. A clamp form 4 is attached to the lower end of the upper cross-head. A similar clamp form 5 is attached to the lower pressure-head ,6,

which is adjustably secured to the main frame 1. r r

7 is an anvil attached to the form 5. Co-

operating with this anvil is a plunger 8,

which is slidably held in the upper crosshead 2. The upper and lower cross-heads 2 and 3, together with the plunger 8, are all suitably actuated by cam-members, all of which operation isclearly described in the above-mentioned co -pending application.

Oscillating fingers 9 and 10 are pivoted to the main frame and are open at their lower ends thereby forming a housing for the bell cranks 11 and 12 received within and pivoted thereto, as shown in Fig. 5.

Patented Feb. is, 1918.

Plungers 14. and 15 are attached to the lower sliding head 3 and are adapted to come in contact with the fingers 9 and 10 and force them to a comparatively vertical position upon the upward movement of the plunger. Additional abutments 16 and 17 are arranged on the lower cross-head and are adapted'to engage the bell-cranks 11 and 12. These abutments come in contact with the bellcranks during the clenching operation.

For the purpose of forming the staple 18, as shown in Fig. 1, into a ring, the plunger 8 is employed, which operation is clearly described in the above-mentioned co-pending application.

Numerals 19 and 20 are the broom-clamps, which are provided with hooked ends 21, 21 and 22, 22 respectively. The clamp 20 is adapted to rest upon the lower clamp-form 5, while the clamp 19 is adapted to be held or retained in the upper clamp-form, preferably in the following manner The clamp-form 4 is provided at its rear with .pins 4, 4, which pins slightly hook over the ends of the clamp. Pivotally mounted upon the face of the cross-head 2 is a clamp-holding-finger 23, which is pivotally mounted upon the cross-head to a member 21, forming a hinged joint therefor. As will be noted in Fig. 2, the lower end of this holding-finger is adapted to clench the front edge'of the clamp-form 19, A reach rod 25 is movably attached to the clamp-holding-finger. This rod 25 is preferably screw-threaded at its upper end, and is adapted to receive a plate 26, being secured thereto by the lock-nut 27. Attached to the plate 26 is the, yoke 28. This yoke is provided with a slot 29, and passing loosely therethroughis abolt 30. This bolt is screwed into the center of the broom-machine shaft, and a collar or spacer rod is a compression spring 34, which, as

will be seen, tends to force the rod downwardly, thereby increasing the gripping properties of the holding-finger 23;

finger -23 and the pinsu l.

thema v These bell-cranks in turn force the clamp The operationlof the machine is asfolends, extending upwardly. The clamp 20 is now placed in thelow'er form 5 The clamp 19 is then placed in the upper term 4 and is held therein by means of the holdingplaces a ,quantity of fiber overthe lower clamp, as shown in Fig. 1. Ahandle inserted. between the fibers, with the annular groove 3610f the "handle in lino with the "annular bead 37 ofthe clamps. The head {3 moves upward, just far enough to cause "the plungers 1A and '15 to raise the'fingers to a vertical position. The head 3"11'0W"I'e-' mains stationary, and theupper head 2Ide- "scends" from the position shownin Fig; 1" Ito-that shown in=F ig. 3. In this :position 'thehooked ends 21, 21, and 22, 220i the clamps just pass-each other. As the head descends, it carriesthe entireupper clamp release mechanism, except the bolt 31' secured to the camshaft. Then the. upper clampY19'comes, incontact with the cornfiber'13,' the device is so adjusted that the stationary bolt 31 strikes the upper end of the slot in the yoke 28.. nTherefore', as the V head and attachedparts continue to move downward, the finger 23 is'drawn to 'a position (as shown in Fig- 3) which will release the upper clamp 19. The upper head 2 now remains stationary, and "the lower heady?) moves upward. The abut ments' 1'6 and 17come into contact with the bell-cranks 11 1 ends to a straight line, thereby causing the hook members '21, 21, and'22, 22, to come' into ali-nement During the timeof the lat- V ter operation, the plunger 8 has descended,

curving'the staple into the form'of a ring 1 in the beads of the clamp. Just as the hook ends of the clamp are brought into straight line, the head 2 rises. The pressure of the i fiber forces the clamps apart, thus'causing Ition.

the hooked ends 21,21 and 22, 22,:Ito hook into each other.

machine'is ready to .repeatits cycle of opera- We claim V .7 1. A broom clampingmachine jcomprlsf i-ng two movable cross-heads, V clamp-form, carried by one'of said cross-heads, a clampform cooperating therewith, said clampa,

forms adapted toreceive clamps, fingers pivoted to and carried by the frame, bell-cranks carried byfsaid fingers, means carried by the other crosshead'in position to engage the bell-crank to cause the latter to exert flat- 7 eral pressure upon the clamp ends torforce them i'nto position to hook or interlock with The; operator and12, imparting motion to posed between said collar andguide for ex- The lower headnow descends, and the clamp ends to force them into position to hook or interlock with each other. K

6. A broom, clamping machine, eomprising two movable cross heads, a cla-inp 'gt'orm carried by one ofsa-id cross heads, a clamp leasingthe upper clamp from the upper 2. Abroomclamping machinelcomprising two clampforms, one of which is movable, said ;clamp='forms adapted to receive clamps, means movable with the form for holding thee/lamp thereto, meansfor forcingsaid clamps together, and means actuatedby the movement of the clamp form for automatically releasing said clamp holdingvmeans.

I A broom icjlan'ip'ing -machine compris ing upper and lower movable crossheads, a clamp form'c'arri'ed by one of said cross- 7 heads, -a;clamp+i'orm codperatin'g therewith, said forms adapted to receive clamps, a pive oted hook harried by the upper cross-head which is adapted toho'ld'lthe clam V thereto,

'clampform cooperating therewith,- said forms adaptedto receive clamps, a pivoted is adapted to hold the clamp-thereto, means "means for forcing said clamp- 'orms to- 7 geth'eryand means carried by the cross head adapted to, actuatethe pivoted hookfor re- 7 "hook carried by the upper cross-head which v for forcing said clamp-forms together, means 7 comprising a vertical rod, the lower end of which" is pivoted to said pivoted hookfand having its upper endad'justably guided, a

guide interposed yon said cross-head, and surroundingsaid pivoted rod, a collar-adjustably secured tosaid rodya spring inter erting down-ward tension on said rod, and means for limltingthe downward movement ing together of the said clamp-members. 5,. A broom clamping machine, -,compris ing two movable rcross heads, a clamp formcarried byone of said vcross heads, a clamp form cooperating therewith, "said 1 .elamp -l10 'form adapted to receive clamps, said clamps having hooked ends,fingers, and bell cranks I pivoted to and carried by the frame 'said fingers and bell cranks pivoted on a -common 1 center, one'astride the other "to house it, and- 11 ,jmeans'carriedby the other eross head in po sition toiengage the bell cranks to cause the latter to :exert lateral pressure 7 upon. the

frame. cooperating 1 therewith, said, clamp havi'ng hooked ends, fingers, and bell cranks pivoted to and carried bythe frame,s a-id fingers and bell cranks pivoted; on a Tcorn'mon center, one astride the other to house it, into position to hook or inter-lock with each means carried by the other cross head to enother. gage the fingers and force them into a verti- In testimony whereof we afiix our signa- 10 cal position, and additional means carried by tures.

5 the same cross head in position to engage the I bell cranks to cause the latter to exert lateral HARRY E. SMITH. pressure upon the clamp ends to force them GEORGE W. DUVALL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

